Muffler for engines



(No Model.)

P. M. UNDERWOOD.

MUFFLER FOR ENGINES.

No 552,085. Patented Dec. 24, 1895.

ANDREW a GRAHAM PHOTOUTHQWASHXNGTON DYC PATENT OFFICE.

FRANK M. UNDERIVOOD, OF UPPER SANDUSKY, OHIO.

MUFFLER FOR ENGINES.

SPECIFICATION forming part of Letters Patent No. 552,085, dated December24, 1895' Application fi1 d March 14, 1895. Serial No. 541,703. (Nomodel.)

To all whom it may concern.-

Be it known that I, FRANK M. UNDEEwooD, a citizen of the United States,residing at Upper Sandusky, in the county of \Vyandot and State of Ohio,have in vented certain new and useful Improvements in Mufflers forEngines; and I do hereby declare the following to be a full, clear, andexact description of the in vention, such as will enable others skilledin the art to which it appertains to make and use the same.

-My invention relates to improvements in muiiiers for gas, gasoline, orother engines.

In gas or gasoline engines in common or general use at each ignition orfiring of the charge of gas and upon the exhaust of each stroke of thepiston a loud report is made which is unpleasant and annoying and is adefect which I aim to remedy by my present invention.

The object of my invention is the provision of an extremely simpledevice which can be attached to the exhaust-pipe at a very small expenseand which will entirely muffle or deaden the report of the charge andthus prove a desirable and practical acquisition to all gas or gasolineengines."

To attain the desired object the invention consists of a niuflierembodying novel features of construction substantially as disclosedherein.

In order that the peculiar construction and operation of my device maybe readily understood and its numerous advantages be fully appreciated,I invite attention to the accompanying drawings.

Figure 1 represents a side elevation of a muflier constructed inaccordance with and embodying my invention. Fig. 2 represents a verticalcentral sectional view thereof, and Fig. 3 represents a perspective viewof the mufflin g disk or plate detached.

In the drawings, the letter A designates the exhaust-pipe attached tothe engine in the well-known manner and leading to the lower disk-plateB, between which and the upper dished or eoncaved plate 0 is secured themuiiiing disk or plate D. I11 this disk or plate, which is of peculiarconstruction, are

embodied the essential features of my invention. This disk is preferablymade of wood or any other suitable material which will have a naturallydeadening or inuffling effect and is provided with the inwardly-inclinedopenings, bores or passages E extending in a series through the bodythereof and has the deeply-inclined exit or discharge openings F whichextend from the top of the disk through the same to the circumference orperiphcry of the disk. From this construction it is evident that theexhaust passing into the pipe strikes against the muffling-disk, iscarried through the same by the inclined openings in the body of thedisk and escapes through the openings in the edges and will thusentirely muffle or deaden the sound, but will not in any manner affectthe steady and even running of the engine.

I claim- 1. In a muffler the combination with the exhaust pipe of thecasing consisting of an upper closed section having an opening to admitthe exhaust pipe, and a deadening or muffling disk secured between thetwo sections of the casing and provided with inlet and outlet openingsfor the entrance and escape of the exhaust.

2. In a muffler the combination of the casing having an opening toreceive the exhaust pipe, the muffiing or deadening disk secured in thecasing and having openings to allow the entrance of the exhaust and alsoopenings leading to the outer air to allow the escape of the exhaust.

3. In a muffler, the combination of the easing having the opening toreceive the exhaust pipe, the muffiing disk secured between the sectionsof the casing andhaving the inclined openings in the body thereof toallow the entrance of the exhaust and the oppositely inclined openingsleading to the outer air to allow the escape of the exhaust.

In testimony whereof I affix my signature in presence of two witnesses.

FRANK M. UNDERIVOOI).

lVitnesses: I

J. M. STEVENSON, WARNER CLARK.

